What's the screen that displays results from typing text, performing calculations, or running programs?

The correct answer would be, Monitor.

Explanation:

The screen that displays results from typing text, performing calculations or running programs is called as Monitor.

Monitor is the basic part of the computer system. There are three major parts of a computer. One is CPU, other is Monitor and the third one is Keyboard. Monitor is used to display anything you do though your computer system, either it is calculations, typing texts, running programs, playing games, everything is displayed through the monitor. Monitor is called the Output device of the computer system.